Xalvis r riedler



(No Model.)

A. RIEDLER.

VALVE GEAR.

No. 395,174. Patented Dec. 25, 1888.

WITNESSES M VE/VT/IB A TTUBIVEYS N, PETERS. Phnln-Lilhogrnpher.Wushingkon, o a

STATES 'ALVIS RIEDLER, OF AACHEN, PRUSSIA, GERMANY.

VALVE-G EAR.

SPECIFICATION forming part of Letters Patent No. 395,174, dated December25, 1888.

(No model.)

Patented in Germany December 23, 1886, No. 42,346; in

Austria-Hungary December 24, 1886, No. 35,379 and No. 65,621,- in FranceJanuary 19, 1887, No. 181,005, and in England January 19,188'7,N0.855.

To all whom it may concern:

Be it known that I, ALVIs RIEDLER, a subject of the King of Prussia,Emperor of Germany, residing at the city of Aachen, in the Kingdom ofPrussia, Empire of Germany, have invented certain new and usefulImprovements in Valve-Gear, (for which Letters Patent have heretoforebeen granted to me in Germany, Noetflfid, dated December 23, 1886; inAustria-Hungary, No. 35,379 and No. (55,621, dated December 21, 1886; inFrance, No.

1 181,005, dated January 19, 1887, and in England, No. 855, datedJanuary 19, 1887,) of which the following is a specification.

This invention relates to improvements in valves for pumps andair-compressors that open automatically, but are closed by the action ofa separate power-for example, the pressure of a spring, weight, orliquid under pressure.

The invention consists in the combination, with a valve, of adownwardly-pressing spindle above it, a rocking lever-arm for raisingthe spindle, and mechanism for operating the rocking leverarm from themotor of the pump or air-compressor. The valve-gear does not raise thevalves, but raises the rods above them, thus permitting the valve toopen, and

then the valve-gear permits the (lownwan'lly-v pressed rod to descendslowly and close the valve.

In the accompanying drawing a diagram matical side view oi my improvedvalve-gear is shown, parts being broken out and others being in section.

1; is the pressmre-valve, and "v' the suctionvalve. Above the two valves1* and v the two spindles s and s,.respectively, are mounted to slidevertically in suitable stuffing-lmxes, 25 and if, in the valve-casing A.Said spindles s s are not connected with the valves 1: 1:, but arepressed downward at all times by a separate and independent source offorce or power,

under the action of the spring f and liquid under pressure,respectively, to move downward and to press down and close the valves 2/o. Between the spindles s s the rock-shaft 10 is mounted, and from thesame the two leverarms h h project in opposite directions, and an arm,71 projects downward at right angles to the lever-arms 71 7t. The endsof the arms h h enter slots in the spindles s s, or rest againstprojections of said spindles, and the arm 71 is connected by means of arod, a, either directly or by intermediate rods, 0", with a crank oreccentric, h, from which the arms 7L2 and h h are thus rocked. Duringthe time the eccentric moves from c to e the arm h raises the spindle s,that is pressed down by the liquid in the cylinder 0 from the valve 1!,thus permitting said valve to rise and open. \Vhen the arm 7L swingsdown, the spindle s is pressed down by the liquid acting on its upperend, and said rod 3 presses the valve 0; upon its seat and closes it.The valve is not closed abruptly, asthe spindle rests upon the end ofthe lever-arm 7L and cannot deseen d any faster than said lever-arm.During the time the lever-arm h moves upward the lever-arm 7L movesdownward, and the spindle s is pressed downward by the spring f andcloses the valve 1:. During the downward movement of the lever-arm h thelever-arm 7L rises and raises the spindle 9 from the valve 1:, thuspermitting said valve to rise.

In the case the valve-gear eccentric does not change its stroke at thesame time the pump piston-crank does--for example, when the end of thepump piston-crank is at k, and 8 5 the connection of the rod 7' and theeccentric is at c-the eccentric will move from the point e to the point6' before the stroke of the valves changes. \Vhen the eccentric is at c,the valve 21 has already been closed, and during the time the eccentricmoves from c to e the lever-arm h swings downward in the slot of thespindle s, and the spring f keeps the valve 1) closed. At the same timethe lever-arm h raises the spindle s more than is necessary. All this,however, has no influence on the operation of the valves.

hen the eccentric of the valve-gear and '10 from a separate eccentric.

the pump-piston change their stroke at the same time-that is, when theangle g:or in the case the arm 7L2 is operated by a rodthat,reciprocates with the pump-piston, the above movements do not takeplace, but the valves open and close in the usual manner.

It is not absolutely necessary to operate both valves v and 0 by thesame gear, as the spindle above each valve may be operated The valves 1and '0' may have one or more seats, as may be desired.

In case springs are to be used exclusively for pressing the spindlesupon the valves, they may be located within the valve-casing A. Therockin -shaft \V can be mounted to pass through stuffing-boxes andtransversely through the valve-casing A, the lever-arms h 76' beingwithin the valve-casing. The valvegear may be operated by any eccentricor crank, and any eccentric on the motor-engine of the pump may be usedfor this purpose. Any rod reciprocating with the pump-piston may be usedfor operating the spindles s and 3' either directly or indirectly. Thereciprocating rod may be operated from the main crank of the shaftinstead of by a separate eccentric.

It is essential in all constructions that the reciprocating or rotarymotion of the driving elementhave sufficient power to overcome thepressure exerted 011 the spindles before the valves begin to open, andthat the said pressure can operate freely when the valves are 3 5 to beclosed. In all cases the valve-gear never opens the valves and onlycloses them by intermediate mechanism.

Having thus described my invention, I claim as new and desire to secureby Letters Patent 4o 1. The combination, with a valve of a pump oraircompressor, of a constantly-compressed spindle adjacent to the valve,said spindle being independent of and not 0011- nected with said valve,and alever acting on 5 the spindle, as described, so as to impart apositive oscillating motion to said spindle, substantially as set forth.

2. The combination,with the valve of a pump or air-compressor, of aconstantly-pressed 5o spindle adjacent to said lever, said spindle beingindependent of and not connecting with said valve, a lever acting on thespindle, a crank or eccentric, and a rod operating the fulcrumed leverfrom said crank or eccentric, substantially as set forth.

3. The combination, with a valve casing or casings, of valves in thesame, a constantlypressed spindle adjacent to each valve, a rockingshaft, lever-arms on said shaft engaging the spindles, and mechanism,substantially as described, connecting said rocking shaft with a movableelement of the pump or air compressor, substantially as set forth.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

ALVIS RIEDLER.

\Vitnesses:

J OH. HECKMANNS, F. LANGER.

